Pipe-wrench.



N0. 672,46l. Patented Apr. 23, l90l.

G. E. STANSBURY. I

PIPE. WRENCH.

(Application filed Aug. 25, 1900.)

(Np Model.)

J 1. MIMHMII/MWIQ ATENT union,

GEORGE E. STANSBURY, OF OATLIN, ILLINOIS.

PIPE -RENCH.

SPECiIFICATION forming part of Letters Patent No. 672,461, dated April 23, 1901. Application filed August 25, 1900. Serial No. 28,060. (No models To aZZ whom it may concern.-

Be it known that I, GEORGE E. STANSBURY, a citizen of the United States, residing at Oatlin, in the county of Vermilion and State of Illinois, have invented a new and useful Pipe- Wrench, of which the following is a specification.

My invention relates to wrenches, and more particularly to wrenches for turning pipes or other round or cylindrical bodies; and it has for its object to produce a wrench of this charactcr which will be strong, simple, and eflicient and will be capable of a very fine and varied adjustment.

With this object in view my invention consists in the improved construction and novel arrangement of parts of a wrench, as will be hereinafter more fully set forth;

In the accompanying drawings, in which the same reference-numerals indicate corresponding parts in each of the views in which they occur, Figure 1 is a perspective view of my improved wrench. Fig. 2 is a longitudinal sectional viewof the same. Fig. 3 is a cross-sectional View, and Fig. 4 is a perspective detail view of the sliding detent.

Referring more particularly to the drawings, 1 indicates a bar of metal, which may be of any suitable length and size and has its forward end inclined or beveled, as shown at 2. The front face of the bar is provided with teeth or inclined notches 3, and the tip of the inclined end is also preferably provided with transversely-arranged teeth 1, the heel 5 of the inclined end being preferably smooth.

The rear face of the bar, near the heel, is provided with a perforated projection 6, which is preferably semicylindrical and slightly narrower than the bar. A chain 7 is pivotally secured to the projection and is adapted to be extended around in front of the beveled end of the bar and back along the toothed side thereof. A sliding detent Sis fitted upon the bar and is adapted to be moved back and forth between the handle 9 and the head 10 or outer end of the wrench. The detent is preferably made in form of a loop 11, which fits around the bar and has one side formed or provided with a forwardly-extending projection 12, the front end of which is formed into a hook 13, and the under surface is provided with a lip or catch 14, which is adapted to engage with the teeth 3 of the bar 1 and lock the chain around the object being operated upon, the links of the chain being adapted to be passed over the hook 13. The chain may be of any desired form; but I have shown itcomposed of alternately-arranged solid and" open links, similar to the ordinary bicycle or sprocket chain.

In using myimproved wrench the free end of the chain is passed around the object to be manipulated and then connected with the detent by slipping one of the links over the hook upon the detent. The detent is then drawn back upon the bar as far as it will go to tighten the chain around the object and its catch made to engage with one of the teeth of the bar.

By constructing the chain so that different links can be connected with the hook upon the detent and adapting the catch upon the detent to engage with any one of a series of teeth upon the bar and having the length of the links greater than the-distance between the teeth upon the bar a very fine adjustment may be secured, and by providing a suifficient length of chain objects of different sizes or diameters may be grasped by the wrench.

Owing to the fact that the friction of the chain may not be sufficient to grasp and hold small articles, I prefer to provide the tip of the bar upon its beveled end with notches; but with larger articles, which will engage with the heel of the bar, the friction is sufficient to hold without the use of the notches. By making the projection on the back of the bar of less width than the bar the side bars forming the end link of the chain can be secured upon each side thereof by means of a suitable rivet, and thus a chain can be used of substantially the same width as the bar, thereby securing a very neat and strong construction.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a wrench, the combination with a bar, one side of which is provided with teeth and the opposite side with a projection and the end inclined, the tip of the inclined portion being notched, of a sliding detent on the bar provided with a hook and a catch, said catch being adapted to engage with either one of the teeth of the bar, and a chain secured at one end to the projectionand having its free portion adapted to engage with the detent.

2. In a wrench, the combination, with a bar, one side of which is provided with teeth and the opposite side with a projection and .one end inclined, of a sliding detent on the bar, said detent being in the form of a loop, one side of which is provided with a hooked extension, the under face of the extension being provided with a catch for engaging with the teeth on the bar, and a chain secured to the projection at one end and having its free portion adapted to be engaged with the hook on the detent.

3. In a Wrench, the combination, with a bar 15 having teeth upon one side and a perforated projection on the other, the projection being of a less width than the Width of the bar, of

a hooked sliding detent on the bar and a chain of the same Width as the bar, the links of 20 which are adapted to engage the hook of the detent and the side bars at one end pivotally secured upon opposite sides of the projection.

GEORGE E. STANSBURY.

Witnesses:

T. F. TERPENING, SAM R. TILTON. 

